Regulating valve for rotation motors



Dec, 2, 1924. 1,517,503

C. C. HA NSE N REGULATING VALVE FOR ROTATION MOTORS Filed Nov. 12. 1921 Patented Dec. 2 1924.

UNITED STATES PATENT OFFICE.-

cr'rAaLEs o. HANSEN, orEAs'roN, PENNSYLVANIA, ASSIGNOR rorNeEnsoLL-EANn comrANY,- or JERSEY our, NEW JERSEY, A CORPORATION on NEW JERSEY.

Y REGULATING VALVE Eon. ao'rA'rIoN morons.

Appflieation filed November 12, 1921. Serial No. 514,816.

To all whom it may concern:

Be it known that 1, CHARLES C. HANSEN, a citizen of the United States, a resident of Easton, county of Northampton, and State of Pennsylvania, have invented a certain Regulating Valve for Rotation Motors, of

which the followin is a specification ac-.

companied by drawmgs.

' This invention relates to fluid actuated rock drills of the hammer type, but more particularly to a valve for automatically regulating the supply of fluid to the rotation motor of such a machine.

In United States Patents, Nos. 1,372,914 and- 1,372,915, granted March 29, 1921, to W. A. Smith, assignor to Ingersoll-Band Company, a valve for regulating the rotation motor is disclosed, so constructed however that the normal supply of fluid to the motor. cannot conveniently be controlled without the addition of a needle valve or other suitable device in the supply line, capable of read and quick adjustment, although the sai independent valve is not shown' in said patents.

The objects of the present invention are to improve upon a valve of the general type disclosed in said patents, and produce a unitary valve structure in which ready and convenient manual rotary adjustments of the valve casing may be effected as desired for controlling the normal flow of fluid to the rotation motor without the provision of a separate valve in the supply line for this purpose.

My-improvement is illustrated in one of its preferred forms in the accompanying drawings, in which Figure 1 is a side View partly in longitudinal section of a rock drill embodying my invention, I V

Figure 2 is a detail end view,

Figure 3 is a detail transverse sectional view on the line 3-3 of Figure 1, looking in the direction of the arrows.

Figure 4, is a view similar to Figure 3 with the parts in a different position,

Figure 5, is a detail longitudinal sectional view through the valve structure showing the valve in a different position, and

Figure 6, is a. detail transverse sectional view on the line 6-6 of Figure 1 through the rotation motor looking in the direction.

' screws 71.. The valve casing of the arrows.

' Referring to the drawings, only so much of the operative parts of a fluid actuated rock drill of the hammer type is shown, as will serve to illustrate my invention. The machine comprises the cylinder A, having the front head B provided with the rotation sleeve C through which the drill 'steel D extends in position to receive the impact of the reciprocating piston hammer E. A fluid actuated rotation motor of the gear type, having the gears F, is mounted in the back end portion G of the cylinder, and the back head H is provided with a valve chest J for the automatic rotation motor regulating valve. The parts of the machine are secured together by the usual through bolts K. One of the gears F is provided with a spindle F having a pinion G within the front head B, meshing with a gear H on the rotation sleeve 0, for imparting rotation to the drill steel D. 7

Motive fluid is supplied to the machine through the inlet L and passing from the usual throttle valve 0,-enters the valve chest J through the passage P. .From the valve chest, the motive fluid passes through the port Q, and passage R to the rotation motor, exhausting from the motor through the exhaust ports S, into the exhaust passage T and thence to atmosphere.

The valve structure in the valve chest J comprises a valve casing U, having a longitudinal peripheral groove V, forming an external passage partly within the enlarged bore W of the valve chest J and adapted to cooperate with the port Q leadirig to the rotation motor. The valve casing is also provided with a central passage X in its body portion, and radial passages 1 in its sides, which are controlled by, an automatic valve Z in theform of a plunger normally maintained in closed position by a spring 11 adapted to be compressed between the valve and the end of a screw threaded adjusting screw 6 for adjusting the tension of the spring. The valve casing U is rotatable within the valve chest J and may be manually adjusted to difierent rotar positions by means of the handle 0, hel upon the valve casing by means of the nut d and also provided with a'spring pressed detent e, cooperating with the notches or depressions f on the face of the plate 9 adapted to be secured to the back head as b means of the ll has a swivel connection with the valve chest J, so that the casing can be rotated without being moved longitudinally in the valve chest. This connection between the valve casing and chest prevents .the vibration of the drill from movin the casing to admit a greater supply of motive fluid to the motor at periods when a stronger or faster rotation would be unnecessary.

In the operation of the device, the normal it supply of fluid to 'the rotation motor is controlled by the rotary adjustment of the valve casing J which may be turned to the position indicated in Figure 3, in which the outside groove V of the valve casing registers completely with the port Q leading to the rota- ,tion motor or else .intermediate positions may be selected, one of which is shown in Figure 4, in which a less'supply of fluid ispassed to the rotation motor. When the motor slows down, under increased load, and the back pressure is sufficient to overcome the spring a,--the automatic valve Z will open additional ports in the side and end of the. valve casing, as indicated-in Fig-' ure' 5, to permit more fluid to pass to therethe casing in the 'said conduit to control the flow of motive fluid to the motor without moving said casing longitudinally, includin means for automatically locking the va' ve casing in different adjusted rotative positions.

2. In a fluid actuated rock drill of the hammer type, the combination of a rotation motor and a valve for automatically regulating the supply of fluid to said motor comprising a unitary casing rotatable in a supply conduit leading to the motor and itself controlling the normal supply of fluid to the motor, a normally closed spring pressed regulating valve within the. said rotatable casing adaptedto control the amount of fluid passing from the said conduit through ports in the side and end of the casing to the motor, and manual means for rotatably adjustin the casing in the said conduit to control t e flow of motive fluid to the motor without moving said casing longitudinally, including means for automatically locking the valve casing in diflerent adjusted rotative positions. I

3. In a fluid actuated rock drill of the hammer type the combination of arotatio'n motor and a Valve for automatically regulat ing the supply of fluid to said motor, said valve compressing a unitary casing rotat-v able in a supply conduit leading to the motor and itself controlling ports and passages leading from the conduit to the motor, a

normally closed spring pressed regulating valve within said rotatable casing adapted to control the amount of fluid passing from said conduit through ports in the sides and end of the casing to the motor, and manual means for rotatably adjusting the casing in the said conduit to control the'flow of mo tive fluid around the outside of the casing to the motor without moving said casing iongitudinally,- including means for automatically locking the valve casing in difi'erent adjusted rotative positions.

4. In a fluid actuated rock drill of the hammer type, the combination of a-rotation motor, a valve chest having an end port eccentric to the axis of the chest and a valve in said chest for automatically regulating the supply of fluid to said motor, said valve comprising a casing rotatable in a supply conduit lea-ding to th motor, provided wit a longitudinally extding groove and radial passages, and itse f controlling the normal supply of fluid to the motor through said groove and passage, said casing also having a centrally located longitudinal passage, anautomatic regulating valve Within said casing adapted to control additional air through said central passage to the motor as required, and manual means for rotatably adjusting the casing in the said conduit, whereby said groove in the casing cooperates with the port leading to the motor for con:- trolling the flow of motivefluid to the motor.

- In testimony whereof I have signed this.

specification.

CHARLES C. HANSEN. I 

